by P. Michaels and R. Maue, June 21, 2018 in WSJ
James Hansen issued dire warnings in the summer of 1988. Today earth is only modestly warmer.
What about Mr. Hansen’s other claims? Outside the warming models, his only explicit claim in the testimony was that the late ’80s and ’90s would see “greater than average warming in the southeast U.S. and the Midwest.” No such spike has been measured in these regions.
As observed temperatures diverged over the years from his predictions, Mr. Hansen doubled down. In a 2007 case on auto emissions, he stated in his deposition that most of Greenland’s ice would soon melt, raising sea levels 23 feet over the course of 100 years. Subsequent research published in Nature magazine on the history of Greenland’s ice cap demonstrated this to be impossible.
by Arizona State University, June 27, 2018 in ScienceDaily
Scientists have argued for decades over what may have caused this mass extinction, during what is called the “Ediacaran-Cambrian transition.” Some think that a steep decline in dissolved oxygen in the ocean was responsible. Others hypothesize that these early animals were progressively replaced by newly evolved animals.
The precise cause has remained elusive, in part because so little is known about the chemistry of Earth’s oceans that long ago.
A research team, led by scientists from Arizona State University and funded by NASA and the National Science Foundation, is helping to unravel this mystery and understand why this extinction event happened, what it can tell us about our origins, and how the world as we know it came to be. The study, published in Science Advances, was led by ASU School of Earth and Space Exploration graduate student Feifei Zhang, under the direction of faculty member Ariel Anbar and staff scientist Stephen Romaniello. (…)
by GWPF, June 28, 2018
* Most of the plastic waste comes from just a few countries, mostly in Asia and Africa.
* 25% is “leakage” from Asian waste management processes — the rest is waste that has never been collected, but is simply thrown into rivers.
* But European countries ship inject huge quantities of waste into Asian waste management streams, ostensibly for recycling. As much as 20% — millions of tons every year — ends up in the oceans and will continue to do so.
* Since the Chinese banned waste imports at the start of the year, shipments have been diverted to other Asian countries with even weaker environmental controls (Figure 1).
* EU recycling is therefore a major contributor to marine waste and increasing recycling will therefore simply increase marine litter.
Full paper .pdf here
La géologie, une science plus que passionnante … et diverse